An object reflects all the colors of the visible spectrum. what does this tell you about the object?

a. the object is white.

b. the object is black.

c. the object is a mirror.

d. the object is a lens.

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Which model displays the change in a gas when the temperature of the gaseous system decreases?